Campaigners warn of ‘dangerous experiment’ as nuclear plans face backlash.

Tom Sinclair, 10 Oct 25, https://pembrokeshire-herald.com/124146/campaigners-warn-of-dangerous-experiment-as-nuclear-plans-face-backlash/

Climate Camp Cymru supports Llynfi Valley protest against small modular reactors – campaigners urge Pembrokeshire to stay alert

ENVIRONMENTAL activists from across Wales – including several from Pembrokeshire – joined forces with Climate Camp Cymru this summer to support the No Nuclear Llynfi campaign near Llangynwyd in the Llynfi Valley, South Wales.

The group is opposing plans by American company Last Energy to build four small modular nuclear reactors (SMRs) on land within a mile of residential homes and two schools.

The company, a venture capital-backed start-up that has never built a reactor before, is currently seeking UK planning approval. Campaigners say it is deeply concerning that Last Energy is also suing the US Nuclear Regulatory Commission, claiming its safety regulations are “overburdensome” – while applying similar pressure in the UK to reduce oversight and speed up development.

Concerns over waste and flood risk

No Nuclear Llynfi campaigners have highlighted several risks, including plans to store radioactive waste on-site indefinitely, and the fact that the proposed location lies below the water table in a Zone 3 flood risk area – the highest flood designation.

Other worries include the need for 24-hour armed security, the site’s proximity to homes and schools, and the potential use of generated power for data centres running artificial intelligence systems, rather than for local homes or industry.

spokesperson for Climate Camp Cymru said the project “treats post-industrial communities as expendable,” adding that “people in the valleys, and in places like Pembrokeshire too, are being used as testing grounds for risky new energy technologies.”

Raising awareness

The summer camp, set up over the August bank holiday weekend, occupied open land near the proposed nuclear site. Volunteers raised banners along the A4063, distributed flyers, and knocked on around 1,000 doors to alert residents.

Most locals, campaigners said, were unaware of the nuclear proposal – despite claims by Last Energy that it had consulted the community. “There’s a legal duty to inform residents, and that simply hasn’t been met,” organisers said.

An open meeting at Maesteg Rugby Club on September 25 drew strong attendance and marked the beginning of organised local opposition.

Workshops and wider links

Throughout the weekend, the camp hosted workshops and talks from campaigners behind Save Kilvey Hill in Swansea – where activists are fighting a proposed adventure park development – and from CND, the Initiative for Nature Conservation Cymru (INCC), and academics from Cardiff University.

Discussions focused on linking environmental struggles across Wales, from open-cast mining and deforestation to speculative energy projects. Evenings featured live music and Welsh-language sessions celebrating Wales’ radical protest heritage.

Call for local action

Organisers say the success of the Llynfi camp shows the power of grassroots resistance. The camp was left clean and intact, with the landowner’s permission granted after the first day and support from nearby residents.

Pembrokeshire campaigners are now being encouraged to stay alert to similar proposals in the west. Sites such as Trawsfynydd and Wylfa are already under consideration for future SMR projects, and environmental groups warn that West Wales could be next.

Anyone interested in hosting or seeking support from next year’s Climate Camp Cymru can contact the group via email at climatecampcymru@proton.me.